How to Replace the Spark Plug and Check the Ignition Spark on Your Makita 2-Stroke Chainsaw

The following instructions are based on the DCS6400, DCS6401, DCS6420, DCS6421, DCS7300, DCS7301, DCS7900, and DCS7901 model Makita chainsaws. Always read and be familiar with your equipment’s operator’s manual to understand the specific parts and procedures that pertain to your equipment.

Never touch the spark plug or plug cap while the engine is running. Make sure you turn the engine off and allow it to cool before attempting to service your equipment in any way. Wear protective eye and hand gear while performing maintenance.